Zhibin HUANG
金属学报(英文版)
Platinum films were sputter-deposited on two groups of nickel alloy substrates, in which the first group was the samples with rough surface, and the other group with polished surface. The platinum thin-films were applied to serve as the low-emissivity layers to reflect thermal radiation. Then, the platinum-coated samples were heated in air at 600 ℃ for 200~h to explore the effect of high-temperature environment on the emissivity of coated platinum film. After annealing, the average IR emissivity (at the wavelength of 3-14 μm) of the platinum film was only about 0.1 for polished sample and 0.45 for rough sample. The diffusion between platinum and the nickel-alloy elements at
600 ℃ had been also discussed.
关键词:
Low-emissivity layer
,
Platinum film
,
Infrared emissivity
于献
,
郁飞
,
倪维良
,
谭伟民
涂料工业
采用铁蓝包覆铝粉制备黄绿色红外低发射率聚氨酯无光涂层,用SEM及X射线衍射仪、红外发射率测试仪、色度仪、光泽仪分别对包覆铝粉的形态及成分、涂层的红外发射率、可见光颜色及光泽进行表征,结果表明:包覆铝粉不仅能降低涂层的光泽,而且能有效降低涂层在8～14μm波段的红外发射率.当包覆铝粉质量分数小于20％时,涂膜附着力和耐冲击性优良,当其用量达到20％～30％时,涂膜物理机械性能下降明显.相同颜色的包覆铝粉涂层和普通铝粉调色涂层对比发现,前者具有显著的低发射率特性,主要是因为包覆铝粉具有更低的金属颗粒间距和更高的电导率.
关键词:
红外发射率
,
机械性能
,
铁蓝
,
铝粉
